Actually its a simple hash but not anonymous hash.

I have expanded on Veltro's response.

Given the simple structure provided, I was able to back-engineer the hash. I then used the Data::Dumper->Dump method that allows names to be stored, following the documentation perldoc Data::Dumper.

There are slight differences in the way the storage occurs. The named hash gets stored as a hash, whereas the VAR structures are stored anonymously. Notice the arguments to Data::Dumper->Dump are each in anonymous arrays. You may need to play around with the sigils to the arguments a little to get the desired output.

#!/usr/bin/perl -T
# use v5.22 for <<$datafh>>

use strict;
use warnings;
use feature qw/state/;
use Data::Dumper;

my $data = get_input_data(); 

open my $datafh, '<', \$data
 or die 'not getting it';

my %HASH;

while(my $line = <$datafh> ){   

 state $kv;
 state $current_key;

 chomp($line);

 if( $line =~ s/\A\$VAR\d+\s\=\s(\'|\[)// ){
   $kv = $1;

   if( $kv eq '\'' ){
     $line =~ s/\'\;\Z//;
     $current_key = $line;
   }
   next;
   
 }else{

   next if $line =~ m/\A\s+\]\;\Z/;
   $line =~ s/\A\s+\'(.*)\'\,?\Z/$1/x;
   push @{ $HASH{ $current_key } }, $line;
 }
}

print 'Dumper with VAR',"\n";
print Dumper(\%HASH);

=head output1
$VAR1 = {
          '3|1' => [
                     'user',
                     'user',
                     'user',
                     'admin',
                     'admin',
                     'manager'
                   ],
          '2|7' => [
                     'system'
                   ]
        };
=cut

print 'Dumper with names',"\n";
print Data::Dumper->Dump([\%HASH],[qw(*HASH)]);

=head output2
%HASH = (
          '3|1' => [
                     'user',
                     'user',
                     'user',
                     'admin',
                     'admin',
                     'manager'
                   ],
          '2|7' => [
                     'system'
                   ]
        );
=cut

sub get_input_data{

q{$VAR1 = '3|1';
$VAR2 = [
          'user',
          'user',
          'user',
          'admin',
          'admin',
          'manager'
        ];
$VAR3 = '2|7';
$VAR4 = [
          'system'
        ];
};

}

[download]

fun note: output1 and output2 appear to sort in the same order after a few manual runs, although which key is top is random, they both show keys in same sorting order as each other. Perhaps an internal optimisation?

In reply to Re^3: Need to find unique values in hash by Don Coyote
in thread Need to find unique values in hash by dipit

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.